Talked with the store where i bought them (flagship store in the production facility) repairing doesnt seem to be an option with the IE900 when something like this occurs and they basically just order a new one. Because i bought in a sennheiser store tho she is gonna prioritize my exchange which still roughly gonna take 4 weeks at least ☹
+1 that I also value Senn's headphones made in Germany. But I understand this move from a business perspective as a cost-saving measure. Just is sad.
It used to be different but it applies to a lot of things. I recall when Miele kitchen appliances were more expensive but you knew they would last longer than the competition. That also no longer holds up
Hmm I am at 3736Serial number is close to 3700.
The right headphone died for me. First i thought it might be the cable because when i moved it worked again but after switching cables the problem still was there. Either the connector is broken or some internals got loose. No matter what i expect them to just replace the whole unit because repairing doesnt seem like an option without damaging the casing or other internals to some degree and just swapping one unit wont work because the drivers are specifically matched with the IE900. Hopefully they can organize a replacement somewhat quick
Almost two months and about 200 hours in now. Definitely worrying. 
F for my IE900....
Today it died way too young after just 3 month of use. Wish me luck for a quick replacement
@newworld666 Just curious after seeing your setup, do hear a noticeable improvement when powering IE 900 thorough Centrance M8V2, compated to Qudelix 5K?
No, Quedelix 5K and IE900 already offers a perfect pair. With the Qudelix LDAC990kb/s BT is noiseless with IE900 (M8V2 with APTX is not totally hiss free between tracks, though it is with Headphones).
Many thanks for the clarification.
Well, if you look at the above reply from newworld666, compared with even very high end dac/amps like Centrance M8V2, a small portable dac like Quedelix 5K can give comparable performance out of IE900 because its a very efficient system when it comes to drivability of the earphone.
Yeah I've always dismissed the Q5K as it looks unbelievably unremarkable (read "cheap"). I may get one to play with and see how I get on with it if all else fails. The Cayin RU6 sits well with me but looking for impressions firstly.
I can't stress enough how convenient Bluetooth is when using a dongle, and by all accounts the ifi Go blu sounds better than the Q5K. Busy finishing my review of the GO blu, which I mainly tested with the IE 900. I'll post a cross-link here when it's done.
